"Exploring RAG through defined workspaces" matching MCP connectors:

MarkupBase turns AI-generated Markdown and HTML into durable, versioned artifacts that people can review and discuss. Its MCP server lets agents publish new versions, preserve contextual comments, include hosted images, and respond to feedback through secure account-linked identities, creating a clear human review boundary without requiring real-time editing.

Read-only Twitter data and TweetAPI documentation for AI agents. Search tweets, retrieve tweet details, profiles and timelines, and browse API docs through OAuth. Not affiliated with X Corp.

Authenticated hosted Streamable HTTP MCP server for crypto data routing through PubFi capability and gateway tools.

The Apiosk MCP lets AI agents discover, pay for, execute, and publish APIs through the Apiosk gateway. It is a machine endpoint, not a website, so connect it from an MCP client (Claude, Cursor, ChatGPT, and others) rather than browsing it here.

AI-first file sharing and collaboration. 251 tools give agents a full workspace: file storage, branded shares, comments, workflows, and built-in RAG. 50GB free, no credit card.

AI inference via MCP — pay per request with Solana USDC through x402. No API keys.

Real-time options analytics MCP server. Access gamma exposure (GEX), delta exposure (DEX), vanna exposure (VEX), dealer positioning, volatility surfaces, Black-Scholes greeks, implied volatility solver, and key options levels for any US equity — all through natural language. 14 read-only tools covering exposure metrics, volatility analysis, pricing, and market data.

Verified React chart generation: select, validate, repair, render, and inspect charts through MCP.

Discover, prove, route, and serve small AI specialists with fast RAG and private agent memory.

Gateway between LLM agents and world data through eight tools and a bundled endpoint catalog.

Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why.

Stress-test a decision through named thinkers' lenses: assumptions, counter-arguments, receipt.

Free remote MCP server for fetching public web pages through a rotating proxy pool.

Discover, pay for, execute, and publish APIs through Apiosk.

CMS Open Payments, with annual dataset discovery through the official DKAN API.

Query SEC EDGAR filings, XBRL financials, and company data through MCP. STDIO & Streamable HTTP.

Run crypto trading strategy backtests through EmidLabs's Backtesting API.

NVIDIA NemoClaw knowledge graph — 55 nodes, F1 0.576 (+269% vs RAG), 11x fewer tokens. MCP-native.

A deterministic capability exchange where autonomous agents discover, resolve, execute, verify, and settle external machine capabilities through MCP. Currently operating as a public sandbox.

Parse PDF/Word/PPT/HTML to Markdown; tables as JSON, image extraction, RAG chunking, page ranges.